A boat includes a hull, a deck, an engine disposed between the hull and the deck, and a jet propulsion unit including a jet nozzle configured to jet water therefrom. The jet nozzle includes a hole to which a water passage is connected and is configured to supply pressurized water from the jet nozzle to a water intake opening located in an interior of the hull. The water intake opening is connected to an interior water passage disposed in the interior of the hull and between the hull and the deck. The interior water passage is connected to a deck hose used to wash the boat.

Provided are silicone-epoxy compositions, protective coatings formed from silicone-epoxy compositions, and methods of preparing the same.

A pontoon cleaning assembly for cleaning floats on a pontoon boat includes a handle that may be manipulated. A scrubbing unit is movably coupled to the handle. The scrubbing unit may scrub a float on a pontoon boat while the pontoon boat is floating.

A hard shell boat cover is disclosed herein. The hard shell boat cover includes a plurality of boat cover sections, the plurality of boat cover sections configured to interlock with one another so as to form the hard shell boat cover, and one or more of the plurality of boat cover sections configured to engage with a top peripheral edge of a boat; and at least one securement element attached to one of the plurality of boat cover sections, the securement element configured to be coupled to a securement strap for securing the hard shell boat cover to the top peripheral edge of the boat.

A hard shell boat cover is disclosed herein. The hard shell boat cover includes a plurality of boat cover sections, the plurality of boat cover sections configured to interlock with one another so as to form the hard shell boat cover, and one or more of the plurality of boat cover sections configured to engage with a top peripheral edge of a boat; and at least one securement element attached to one of the plurality of boat cover sections, the securement element configured to be coupled to a securement strap for securing the hard shell boat cover to the top peripheral edge of the boat.

An objective of the present invention is to provide an underwater ship attachment that is used to divert air, debris, and pressure fluctuations. More specifically, the present invention discloses an anti-cavitation device (such as a diverter device) for flat-bottom boats. The air diverter has been developed to regain, enhance, and protect the operational function of propulsive and steering equipment among displacement and semi displacement hulls. As with protect items such as bottom mounted depth sounder transducers, intakes for engine or general cooling, sea chests, keel coolers, zincs, and all other underwater mounted items susceptible to air ingestion, air disturbance malfunction or debris impact.

An objective of the present invention is to provide an underwater ship attachment that is used to divert air, debris, and pressure fluctuations. More specifically, the present invention discloses an anti-cavitation device (such as a diverter device) for flat-bottom boats. The air diverter has been developed to regain, enhance, and protect the operational function of propulsive and steering equipment among displacement and semi displacement hulls. As with protect items such as bottom mounted depth sounder transducers, intakes for engine or general cooling, sea chests, keel coolers, zincs, and all other underwater mounted items susceptible to air ingestion, air disturbance malfunction or debris impact.

An estimation method executed by a computer, the estimation method includes estimating a fouling degree of a target ship based on an accumulation period since a most recent maintenance on the target ship; selecting, as training data, one piece of data that has a fouling degree that resembles the estimated fouling degree, from among a plurality of pieces of data, when generating a machine learning model for estimating an amount of fuel consumption due to navigation; and generating the machine learning model based on the selected training data.

An estimation method executed by a computer, the estimation method includes estimating a fouling degree of a target ship based on an accumulation period since a most recent maintenance on the target ship; selecting, as training data, one piece of data that has a fouling degree that resembles the estimated fouling degree, from among a plurality of pieces of data, when generating a machine learning model for estimating an amount of fuel consumption due to navigation; and generating the machine learning model based on the selected training data.

The present invention refers to a working assembly for a painting system, containing a mobile platform and a crank and slider-type oscillating mechanism, which reproduces movements transmitted to a shaft and that guides a paint gun, mimicking the process performed by painters. Thus, the mobile platform and the oscillating mechanism were designed to move unidirectionally over the surface, being able to move in two orthogonal directions and also to rotate in order to keep the platform level.